Unable to run gpg command in JAVA

[Steve Revilak]

nishant> open(COMMAND, "echo $text | gpg --homedir $ENV{HOME}/.gnupg -s -u \"The Certificate Key\" |");

srevilak> Try providing the command as a String[], e.g.
srevilak> 
srevilak>    String cmd[] = {
srevilak>       "gpg",
srevilak>      "--homedir",
srevilak>      System.getProperty("user.dir") + File.separator + ".gnupg",
srevilak>      "-s",
srevilak>      "-u",
srevilak>      "The Certificate Key"
srevilak>    };
srevilak> 
srevilak>    runtime.exec(cmd);

Harakiri> All of that is still not the right way to do it, what people
Harakiri> need to know about java is that Runtime.exec does not START
Harakiri> a shell - i.e. its not a bash or anything you are used.

Sorry, my java example was more incomplete than it should have been.
I was only trying to show how to preserve the integrity of
command-line arguments, and I completed glossed over the mechanics of
writing data to and reading data back from from the gpg process.

As you note, Runtime.exec does not start a shell; it's much closer in
spirit to C's execv than to perl's piped open.

Steve